a05f7892-ef23-7506-e044-00144fdd4fa6engutf8nonGeographicDatasetnonGeographicDataset - GA Publication - RecordGeoscience Australia+61 2 6249 9966+61 2 6249 9960GPO Box 378CanberraACT2601Australiasales@ga.gov.aupointOfContact2015-05-19ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata1.1http://www.ga.gov.au/metadata-gateway/metadata/record/69935/Guide to Using the Australian Archean Mafic-Ultramafic Magmatic Events Map2009publication69935Hoatson, D.M.authorJaireth, S.authorWhitaker, A.J.authorChampion, D.C.authorClaoue-Long, J.C.authorGeoscience AustraliaCanberrapublisherRecord2009/041Geoscience Australia has released two web-based map sheets (GeoCat 69347) that show the continental extent and age relationships of Archean mafic and ultramafic rocks and associated mineral deposits throughout Australia. Geoscience Australia Record 2009/41 is a user guide which compiles all the geological and geochronological data that underpins the information portrayed on these two new map sheets.
The Archean eon (~4000 million years to 2500 million years) represents an early part of Earth's history that is noteworthy for the occurrence of unusual olivine-rich ultramafic rocks called komatiites which contain world-class deposits of nickel sulphides.
Archean mafic and ultramafic igneous rocks with reliable crystallisation ages in Australia are confined to the older crustal components in Western Australia and South Australia. In this study, twenty-six Archean Magmatic Events (AME) ranging in age from the Eoarchean ~3730 Ma (AME 1) to the late Neoarchean ~2520 Ma (AME 26) were identified. This mafic-ultramafic magmatic event series is based on several hundred published age measurements, of which over 95 per cent are derived from recent Uranium-Lead dating of zircon and baddeleyite.
The new map sheets, when used in association with the `Australian Proterozoic Mafic-Ultramafic Magmatic Events' map published in 2008 (GeoCat 66114; GA Record 2008/15: GeoCat 66624), summarise the temporal and spatial evolution of Precambrian mafic-ultramafic magmatism in Australia. These maps provide a national framework for investigating under-explored and potentially mineralised environments, and assessing the role of mafic-ultramafic magmatism in the development of the Australian continent. The maps will be of interest to explorers searching for nickel, platinum-group elements, chromium, titanium, vanadium, and cobalt.Commonwealth of Australia (Geoscience Australia)ownerCommonwealth of Australia (Geoscience Australia)02 6249 996602 6249 9960Cnr Jerrabomberra Ave and Hindmarsh DrGPO Box 378CanberraACT2601Australiasales@ga.gov.aucustodianasNeededGA PublicationRecordmineral explorationthememineral depositsthemelithostratigraphythemegeologythemegeochronologythemeEarth SciencesAustralian and New Zealand Standard Research Classification (ANZSRC)2008-03-31+11:00publicationAustralian Bureau of Statistics (ABS)http://www.abs.gov.au/ausstats/abs@.nsf/Latestproducts/1297.0Main%20Features32008?opendocument&tabname=Summary&prodno=1297.0&issue=2008&num=&view=owner9780642483584otherRestrictionslicenselicenseotherRestrictionsCreative Commons Attribution 4.0 International Licenceunclassifiedengutf8geoscientificInformation112.0140.0-36.0-10.0miscUnknownpdfUnknownGeoscience Australia+61 2 6249 9966+61 2 6249 9960GPO Box 378CanberraACT2601Australiasales@ga.gov.audistributoronLinehttp://www.ga.gov.au/corporate_data/69935/Rec2009_041.pdfWWW:DOWNLOAD-1.0-http--downloadRec2009_041.pdfDownload the file (pdf) [17 MB]downloadhttp://www.ga.gov.au/metadata-gateway/metadata/record/69347/WWW:LINK-1.0-http--linkRelated product: Archean Mafic-Ultramafic Magmatic Events Resource PackageRelated product: Archean Mafic-Ultramafic Magmatic Events Resource Packageinformationhttp://www.ga.gov.au/metadata-gateway/metadata/record/70461/WWW:LINK-1.0-http--linkRelated product: Proterozoic Mafic-Ultramafic Magmatic Events Resource PackageRelated product: Proterozoic Mafic-Ultramafic Magmatic Events Resource Packageinformationhttp://www.ga.gov.au/metadata-gateway/metadata/record/66114/WWW:LINK-1.0-http--linkRelated product: Australian Proterozoic Mafic-Ultramafic Magmatic Events: Map Sheets 1 and 2Related product: Australian Proterozoic Mafic-Ultramafic Magmatic Events: Map Sheets 1 and 2informationhttp://www.ga.gov.au/metadata-gateway/metadata/record/66624/WWW:LINK-1.0-http--linkRelated product: Guide to Using the Australian Proterozoic Mafic-Ultramafic Magmatic Events MapRelated product: Guide to Using the Australian Proterozoic Mafic-Ultramafic Magmatic Events Mapinformationhttp://www.ga.gov.au/metadata-gateway/metadata/record/69213/WWW:LINK-1.0-http--linkRelated product: Proterozoic Large Igneous Provinces: Map Sheets 1 and 2Related product: Proterozoic Large Igneous Provinces: Map Sheets 1 and 2informationhttp://www.ga.gov.au/metadata-gateway/metadata/record/70008/WWW:LINK-1.0-http--linkRelated product: Guide to using the Map of Australian Proterozoic Large Igneous ProvincesRelated product: Guide to using the Map of Australian Proterozoic Large Igneous ProvincesinformationdatasetUnknownunclassified